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(No Model.) ZSheetS-Sheet 1.

G. W. STAFFORD & H. BARKER.

Jacquard Attachment for Looms.

No. 236,375; Patented Jan. 4,1881.

' QSheets-Sheet 2. G. W. STAFFORD & H. BARKER.

- Jacquard Attachment for Looms. No. 236,375. Patented Jan. 4,1881.

(No Model.)

Ueuran STATES PATENT @rrrcn.

GEORGE WV. STAFFORD AND HENRY BARKER, OF LAWRENCE, MASS.

JACQUARD ATTACHMENT FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 236,375, dated January4, 1881.

Application filed J une 28, 1880.

and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to letters orfigures of reference marked thereon, which form a part of thisspecification.

This invention relates to closeshed looms provided with a Jacquardattachment; audit consists in means for depressing a portion of 2c thewarp-threads below the warp-level at the same time that the warp-threadsneeded for the pattern are raised above the said level- .in other words,obtaining in ajacquard the result. with the series of single orindependent threads that is effected by the ordinary openshed loom withaharnessframc, the purpose of the invention being to lessen the tensionand friction upon the warp, reduce the cost of the engine, and enablethe loom to be driven at greater speed.

The drawings accompanying this specification represent, in Figure], anisometric elevation of a shedding-engine or Jacquard attachment, whileFig. 2 is a vertical section of the 3 5 frame.

In these drawings, A represents the frame of the engine or attachment,the same being composed of upright side standards or housings, B B,united by horizontal cross-beams or bars 0 (J, 850., while theguide-plate, which directs the lower ends of the harness or drop wiresand spans the area between the housings B B, is shown at D.

The horizontal needles, as they are termed,

5 of the two ranges are shown at a a, &c., and

I) b, &c., their retracting-springs at b b, &c., and their eyes at c c,850., while the vertical hooks or drop-wires of the two ranges are shownat d d, &c., and e e, 850., respectively.

The pattern-cylinder is omitted from the drawings; but the needle-platewith which such cylinder operates is shown at E as se- (No model.)

cured to the upper front part of the housings B B. The warp-threads areshown at f f, &c., the harness or neck-cords connected to the lower endsof the books at g g, &;c., and the mails of said cords at t 2', San.

The above embrace the elementary features of a Jacquard attachment nowin general use.

In carrying out our invention we employ a horizontal open rectangularframe, F, ar "a nged between-the upper parts of the housings B B, andwith its end bars secured to vertical rodsj j, which slide in bearings7c 7c in the contiguous faces of said housings, the frame being thusadapted to slide vertically upon its supports with respect to the otherportions of the ma chine, and carrying upon opposite sides horizontalparallel rods or bars I l, from which the hooks are suspended.

The alternating vertical movements of the frame or carrier F areeffected by a mechanism consisting as follows: The lower end of avertical rod, on, is pivoted centrally to the frame, such rod extendingupward through a slot in the upper cross-bar, (J, of the machineframe,and being pivoted at its upper end to the inner extremity or arm, n, ofa horizontal lever, 0, such lever being fulcrumcd, as shown at p, to anarm, q, erected upon one end of the said bar 0, and at its outer endbeing pivoted to the upper end of a second rod, 1, the lower end ofwhich, in turu,is pivoted to the knee 8 of a toggle-jointed lever, t a,which is added to the outside of the housing and below the plane of thelifting-frame F, the support of the upper arm, t, of the toggle being abracket, 42, secured to the housing. The lower support of the toggle isa bracket, w, erected upon one end ofthe guide-plate D, before named;and this guide-plate, in lieu of being rigidly secured to the frame ofthe engine and serving simply as a guide to the lower ends of thedrop-wires, is in this instance supported in position upon the housingsby guides or ways 3 g which permit it to rise and fall, and thesemovements are imparted by the toggle-jointed lever before named, whilethe rise and fall of the carrier-frame F are effected by the lever o,the arrangement of parts being such that the frame and guide-plate movein opposite directions.

To sustain the plate D in a horizontal position and insure its correctmovement, we add to the opposite side of the engine a duplicate of themechanism last explained, the second horizontal lever being shown at a,the togglejointed lever at b 0, its supports at d and e, and the twobars of the lower bracket atf g.

The lower end of each harness-wire, in lieu of simply playing in a guidewithin the guideplate D, is formed with a head or bend, h, upon theupper end of the shorter portion or side of its eye or loop 1', to whichthe harnesscord is connected, and this head h of the dropwire isdisposed above the guide-plate and intercepts the latter as it completesits ascent. When the warp is level the guide-plate is in its highest andthe carrier-frame in its lowest position with the heads h of thedrop-wires resting upon the top of the guide-plate, and the latter thusserving to uphold such wires and lift their upper hooked ends, 70, outof engagement with the suspensories l l, and so that upon the incomingof the pattern cylinder and card the wires not needed for the patternare pushed inward beyond the path of movement of the suspensories, whilethose required for the pattern remain in a position to be engaged bysuch suspensories when the latter rise.

The levers 0 and a derive motion from the crank-shaft of the loomthrough a connectingrod or pitman, as shown in Fig. 1.

The operation ofthe above-described mechanism is brieliy as follows, itbeing understood that the frame F is in its lowest and theplate D in itshighest position,with the pattern cylinder and card about to come in andwith the warp level: The cylinder and card move in, and by pushing in aportion of the needles leave tree a portion of the drop-wires. Thepattern cylinder and card move in at thesame time that frame F andguide-plate D move toward each other, so that when the pattern-cardstrikes the needles the hooks are clear of the suspensories l l. Thecarrier-frame with its rods or suspensories ll now begin to rise to meetthe hooks of the drop-wires, and the dropwires by and with theguide-plate begin simultaneously to descend until the said hooks engagethe rods, when the frame and plate complete their respective movements,the result being that the frame in its ascent carries with it andelevates above the warp-level such dropwircs and warp-threads as areneeded for the pattern, while the other wires and warp-th reads dropwiththe guide-plate below the warp-level. The shuttle passes through thewarp and returns, and the carrier-frame and guide-plate now reversetheir movements and return to the positions first named, thewarp-threads also returning to a common level, the pattern cylinder andcard retreat, and the drop-wires return to one plane in readiness forthe next ensuing incoming of the pattern card and cylinder.

It will be seen that by moving the warpthreads in opposite directions toadmit the shuttle, in lieu of a movement in one direction ofdoublethedistance, we avoid to a corresponding degree the stretch or tensionof the warpthreads. We are also enabled to simplify the constructionoftheengineand to attain a higher rate of speed of the loom.

The operatinglevers of the frame and guideboard may be actuated by anysuitable motor.

\Ve claim- 1 The COlIlbll'ldtlOl'], with a vertically-movable guideboard or plate, a lifting frame, and sets of hooks and needles, of apair of levers, the suspending-rod of said frame, and the rods andtoggles for depressing and raising said guide plate, substantially asdescribed.

In testimony whereof we aflix our, signatures in presence of twowitnesses.

GEORGE W. STAFFORD. HENRY BARKER.

\Vitnesses:

WILLIAM E. HEALD, Moses H. AMES.

